Answer: B
Explanation:
Ammonia is so toxic that it can be transported and excreted only in large volumes of very dilute solution. As a result most terrestrial animals simply don't have access to sufficient water to routine excrete ammonia.
The main advantage of urea is its very low toxicity. Animals can transport urea in the circulatory system and store it safely in high concentrations. Also much less water is loss when a given quantity of nitrogen is excreted in a concentrated solution of urea than would be in a dilute solution of ammonia.
Answer: A. Accumulate keratohyalin granules. B. Cells increase in size, some retain ability to divide. C. Cell membrane thickens. Cells imbedded in lipid matrix. D. Cells within this layer proliferate.
Explanation:
Answer:
B
D
C
A
Explanation:
Digestion begins in the mouth with the process of chewing also known as mastication. Saliva in the mouth mixes with the food. saliva contains amylose. This breaks down sugar into smaller units of dextrins and maltose.
In the small intestine, the pancreas releases pancreatic juice which breaks down dextrins into smaller units.
the cells in the small intestine helps to transport the digested nutrients to the blood stream
Undigested food goes to the large intestine and eliminated in the stool
The event order should be:
1. Ingesting food, the small bowel filled with food solutes and become hypertonic. It will attract water from the blood which is hypotonic
2. Food digested, some of it absorbed. The osmotic pressure inside bowel will be reduced.
3. All food is absorbed, the osmotic pressure reduced significantly makes it hypotonic. The blood attracts water as it is hypertonic. This will increase the blood volume
Answer:
False
Explanation:
When one of the glands is removed, the other continues to perform its function because they are independent entities that can continue to secrete hormones. This happens with the adrenal glands for example.
